CVE-2026-76928 — HIGH (7.5)

Vulnerability Description

X.509IF protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-476

References

https://gitlab.com/wireshark/wireshark/-/work_items/21469
https://www.wireshark.org/security/wnpa-sec-2026-87.html

FAQ

What is CVE-2026-76928?

CVE-2026-76928 is a vulnerability with a CVSS score of 7.5 (HIGH). X.509IF protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

How severe is CVE-2026-76928?

CVE-2026-76928 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-76928?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.